Authors: Iain M Carey; Stephen De Wilde; Tess Harris; Christina Victor; Nicky Richards; Sean R Hilton; Derek G Cook Journal: Drugs Aging Date: 2008 Impact factor: 3.923
Authors: Antonia F H Smelt; Gerda M van der Weele; Jeanet W Blom; Jacobijn Gussekloo; Willem J J Assendelft Journal: Br J Gen Pract Date: 2010-07 Impact factor: 5.386